SBIoT-ATM: Secure blockchain-IoT framework for next-generation automated teller machine security

Abstract

Modern infrastructure requires state-of-the-art security systems; as system implementation advances, the threats of cyberattacks and intrusions also evolve. Automated Teller Machines (ATMs) are a kind of financial structure that provides a crucial service to customers. To address security concerns using cutting-edge technology today, this paper explores the possibility of incorporating monitoring nodes and IoT with blockchain. We systematically explore the effect of combining these feature sets and propose our system. We evaluate our system using numerous testing procedures, including encryption and decryption capabilities, node network optimization, and a blockchain-based security system. We ran tests on our proposed system and achieved an average throughput of 0.93264 Mbps, with an average delay of 22.64 ms and a PDR of 97.9%. Our FOG security scheme achieved encryption and decryption times of 0.2134 ms and 0.2003 ms, respectively, while maintaining CPU usage below 12%. Our lightweight blockchain used 96.33 MB and 109.33 MB, with CPU usage of 11.5% and 23.1%, during the computation of the second block and subsequent blocks after the genesis block.